forked from OSchip/llvm-project
cfe9ccbddd
1. All `_URC_HANDLER_FOUND` return values need to set `landingPad` and its value does not matter for `_URC_CONTINUE_UNWIND`. So we can always set `landingPad` to unify code. 2. For an exception specification (`ttypeIndex < 0`), we can check `_UA_FORCE_UNWIND` first. 3. The so-called type 3 search (`actions & _UA_CLEANUP_PHASE && !(actions & _UA_HANDLER_FRAME)`) is actually conceptually wrong. For a catch handler or an unmatched dynamic exception specification, `_UA_HANDLER_FOUND` should be returned immediately. It still appeared to work because the `ttypeIndex==0` case would return `_UA_HANDLER_FOUND` at a later time. This patch fixes the conceptual error and simplifies the code by handling type 3 the same way as type 2 (which is also what libsupc++ does). The only difference between phase 1 and phase 2 is what to do with a cleanup (`actionEntry==0`, or a `ttypeIndex==0` is found in the action record chain): phase 1 returns `_URC_CONTINUE_UNWIND` while phase 2 returns `_URC_HANDLER_FOUND`. Reviewed By: #libc_abi, compnerd Differential Revision: https://reviews.llvm.org/D93190 |
||
|---|---|---|
| .. | ||
| cmake | ||
| fuzz | ||
| include | ||
| lib | ||
| src | ||
| test | ||
| www | ||
| .clang-format | ||
| .gitignore | ||
| CMakeLists.txt | ||
| CREDITS.TXT | ||
| LICENSE.TXT | ||